著者
山中 潤一 丸茂 克美 廣上 清一 土屋 秀二 高瀬 尚人 山田 優子
出版者
一般社団法人日本地球化学会
雑誌
日本地球化学会年会要旨集 2014年度日本地球化学会第61回年会講演要旨集
巻号頁・発行日
pp.330, 2014 (Released:2014-09-12)

富山市の土壌中には大気圏内核実験由来のセシウム137のみが含まれ、深度25cmの深さまで移行している。セシウム137は有機体炭素とともに地下に移行している可能性がある。カドミウム土壌汚染対策でカドミウムとともに地下に埋設されたセシウム137は現在も地下に残留しており、客土工法が放射性セシウム汚染土壌処理に有効であることが明らかにされた。
著者
丸茂 克美 江橋 俊臣 氏家 亨
出版者
The Society of Resource Geology
雑誌
資源地質 (ISSN:09182454)
巻号頁・発行日
vol.53, no.2, pp.125-146, 2003-12-04 (Released:2009-06-12)
参考文献数
20
被引用文献数
8

Soil Contamination Countermeasures Law (referred to hereafter as the Law) was made on 29 May 2002, for preventing health damage which toxic substances as Pb, As, Cr(VI) and Cd in soils could cause by oral ingestion.In order to carry out the Law, we must judge whether soils have high toxic metal concentrations or high leachabilities caused by anthropogenic or natural processes. If high toxic metal concentrations or high leachabilities are caused by natural processes, the administration of the Law should not oblige landowners, managers and occupiers of contaminated sites to remedy them.Therefore, it is essential to determine natural levels of Pb, As, Cr(VI) and Cd concentrations and their leachabilities of Japanese soils which have a wide range of chemical and mineralogical composiotion. It is also very important to develop chemical and mineralogical analytical methods to judge whether soils have high toxic metal concentrations or high leachabilities caused by anthropogenic or natural processes.We obtained Pb, As, Cr(VI) and Cd concentrations and leachabilities of stream and marine sediments, as well as soils formed by weathering of volcanic ashes and granite and granitoid, using XRF and conventional wet chemical analytical methods. We also obtained mineralogical data of these sediments and soils, using XRD, TG-DTA and analytical TEM. Furthermore, we obtained lead isotope ratios of these sediments and soils, using ICP-Mass.